libcxx/test/std/time/time.clock/time.clock.steady/consistency.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // UNSUPPORTED: no-monotonic-clock
  10
  11 // Due to C++17 inline variables ASAN flags this test as containing an ODR
  12 // violation because Clock::is_steady is defined in both the dylib and this TU.
  13 // UNSUPPORTED: asan
  14
  15 // <chrono>
  16
  17 // steady_clock
  18
  19 // check clock invariants
  20
  21 #include <chrono>
  22 #include <type_traits>
  23
  24 #include "test_macros.h"
  25
  26 template <class T>
  27 void test(const T &) {}
  28
  29 int main(int, char**)
  30 {
  31     typedef std::chrono::steady_clock C;
  32     static_assert((std::is_same<C::rep, C::duration::rep>::value), "");
  33     static_assert((std::is_same<C::period, C::duration::period>::value), "");
  34     static_assert((std::is_same<C::duration, C::time_point::duration>::value), "");
  35     static_assert(C::is_steady, "");
  36     test(std::chrono::steady_clock::is_steady);
  37
  38   return 0;
  39 }